My Lily got out of her harness when we were at the park today. Fortunately, she came running to me when I called her. It was scary because there were big dogs nearby. My girls have the step-in harness/leash for "tiny" dogs. It has never been a problem for Rose but My Lily is so tiny, and small-boned, the harness has never really fit her as well as it should. I need suggestions for a harness that is easy to get off and on, that is comfy, but most of all, is secure, and will fit a 3-4 pound small-boned Maltese. I don't want this to happen, again.